diff --git a/z1/app/Dockerfile b/z1/app/Dockerfile
new file mode 100644
index 0000000..f6bce7e
--- /dev/null
+++ b/z1/app/Dockerfile
@@ -0,0 +1,17 @@
+FROM python:3.9-slim
+
+# Set the working directory
+WORKDIR /app
+
+# Copy the requirements file and install Python dependencies
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
+
+# Copy the application source code
+COPY app.py .
+
+# Expose port 5000 for the Flask application
+EXPOSE 5000
+
+# Start the Flask application
+CMD ["python", "app.py"]
diff --git a/z1/app/app.py b/z1/app/app.py
new file mode 100644
index 0000000..661aee9
--- /dev/null
+++ b/z1/app/app.py
@@ -0,0 +1,149 @@
+from flask import Flask, request, render_template_string, redirect, url_for
+import os
+import psycopg2
+
+app = Flask(__name__)
+
+# Retrieve database connection settings
+db_host = os.environ.get("DB_HOST", "postgres_db")
+db_name = os.environ.get("POSTGRES_DB", "contacts_db")
+db_user = os.environ.get("POSTGRES_USER", "user")
+db_password = os.environ.get("POSTGRES_PASSWORD", "password")
+
+# Function to make connection to database
+def get_db_connection():
+ conn = psycopg2.connect(
+ host=db_host,
+ database=db_name,
+ user=db_user,
+ password=db_password
+ )
+ return conn
+
+# Init database & create contacts table if doesn't exist
+def init_db():
+ conn = get_db_connection()
+ cur = conn.cursor()
+ cur.execute("""
+ CREATE TABLE IF NOT EXISTS contacts (
+ id SERIAL PRIMARY KEY,
+ name VARCHAR(255) NOT NULL,
+ email VARCHAR(255) NOT NULL,
+ phone VARCHAR(20) NOT NULL
+ );
+ """)
+ conn.commit()
+ cur.close()
+ conn.close()
+
+@app.route("/", methods=["GET", "POST"])
+def index():
+ if request.method == "POST":
+ name = request.form["name"]
+ email = request.form["email"]
+ phone = request.form["phone"]
+
+ # Add new contact at the database
+ conn = get_db_connection()
+ cur = conn.cursor()
+ cur.execute("INSERT INTO contacts (name, email, phone) VALUES (%s, %s, %s)",
+ (name, email, phone))
+ conn.commit()
+ cur.close()
+ conn.close()
+
+ # Show all contacts
+ conn = get_db_connection()
+ cur = conn.cursor()
+ cur.execute("SELECT * FROM contacts")
+ contacts = cur.fetchall()
+ cur.close()
+ conn.close()
+
+ return render_template_string("""
+
+ Contact Directory
+
+ Contact Directory
+
+ Contacts
+
+ {% for contact in contacts %}
+ -
+ {{ contact[1] }} - {{ contact[2] }} - {{ contact[3] }}
+ Delete
+ Edit
+
+ {% endfor %}
+
+
+
+ """, contacts=contacts)
+
+# How can you delete one contact ?
+@app.route("/remove/")
+def remove_contact(contact_id):
+ conn = get_db_connection()
+ cur = conn.cursor()
+ cur.execute("DELETE FROM contacts WHERE id = %s", (contact_id,))
+ conn.commit()
+ cur.close()
+ conn.close()
+ return redirect(url_for('index'))
+
+@app.route("/change/", methods=["GET", "POST"])
+def change_contact(contact_id):
+ if request.method == "POST":
+ name = request.form["name"]
+ email = request.form["email"]
+ phone = request.form["phone"]
+ conn = get_db_connection()
+ cur = conn.cursor()
+ cur.execute("UPDATE contacts SET name = %s, email = %s, phone = %s WHERE id = %s;", (name,email,phone, contact_id))
+ conn.commit()
+ cur.close()
+ conn.close()
+ return redirect(url_for('index'))
+
+ # Show edit for contact
+ conn = get_db_connection()
+ cur = conn.cursor()
+ cur.execute("SELECT * FROM contacts WHERE id = %s", (contact_id,))
+ contact = cur.fetchone()
+ cur.close()
+ conn.close()
+
+ return render_template_string("""
+
+ Edit Contact
+
+ Edit Contact
+
+ Back to Contacts
+
+
+ """, contact=contact)
+
+
+if __name__ == "__main__":
+ init_db() # Initialiser la base de données et la table
+ app.run(host='0.0.0.0', port=5000)
+
diff --git a/z1/app/requirements.txt b/z1/app/requirements.txt
new file mode 100644
index 0000000..2b1fa61
--- /dev/null
+++ b/z1/app/requirements.txt
@@ -0,0 +1,3 @@
+Flask
+psycopg2-binary
+